In the lower right hand corner in "My clubs", click the link that says, "more клубы >>>" It will Показать Ты a Список of all your клубы and under the club's name is "unsubscribe". Click it.
Go on your Профиль and click on 'clubs'. There will be a Список of every club Ты are in. Find the club Ты want to leave and click 'unsubscribe'. I will ask Ты if you're sure so click 'yes'. That should help.
In the вверх right hand corner it says 'search Fanpop', Поиск the club and click on it. Once on the club scroll down a little and it should say 'unsubscribe', click that. Hope that helps :)